Table 3 Mixed models ranked by AICc for three response variables in 2002 and 2003.

From: Hydrologic variation influences stream fish assemblage dynamics through flow regime and drought

Model (by year and response variable)

K

AICc

ΔAICc

wi

2002

Richness

Depth + Season + Flow Regime + (1|Stream/Reach)

7

634.27

0.00

0.42

Velocity + Season + Fow Regime + (1|Stream/Reach)

7

636.16

1.90

0.16

Substrate + Season + Flow Regime + (1|Stream/Reach)

7

636.24

1.97

0.16

Depth + Velocity + Season + Flow Regime + (1|Stream/Reach)

8

636.94

2.67

0.11

Depth + Substrate + Season + Flow Regime + (1|Stream/Reach)

8

637.34

3.07

0.09

Total abundance

Depth + Substrate + Velocity + Season + Flow Regime + (1|Stream/Reach)

9

1868.79

0.00

0.90

Total density

Depth + Season + Flow Regime + (1|Stream/Reach)

7

395.24

0.00

0.57

Substrate + Season + Flow Regime + (1|Stream/Reach)

7

398.03

2.79

0.14

Depth + Substrate + Season + Flow Regime + (1|Stream/Reach)

8

398.20

2.96

0.13

Velocity + Season + Fow Regime + (1|Stream/Reach)

7

399.53

4.29

0.07

Depth + Velocity + Season + Flow Regime + (1|Stream/Reach)

8

399.72

4.48

0.06

2003

Richness

Depth + Velocity + Season + Flow Regime + (1|Stream/Reach)

8

654.46

0.00

0.76

Depth + Velocity + Substrate + Season + Flow Regime + (1|Stream/Reach)

9

657.55

3.10

0.16

Depth + Season + Flow Regime + (1|Stream/Reach)

7

659.53

5.07

0.06

Total abundance

Depth + Season + Flow Regime + (1|Stream/Reach)

7

371.88

0.00

0.65

Depth + Velocity + Season + Flow Regime + (1|Stream/Reach)

8

373.92

2.04

0.23

Depth + Substrate + Season + Flow Regime + (1|Stream/Reach)

8

376.12

4.24

0.08

Total density

Velocity + Season + Fow Regime + (1|Stream/Reach)

7

349.33

0.00

0.81

Depth + Velocity* + Season + Flow Regime + (1|Stream/Reach)

8

354.01

4.68

0.08

Substrate + Velocity* + Season + Flow Regime + (1|Stream/Reach)

8

354.52

5.19

0.06

  1. Models with Akaike weights > 0.05 are shown.